Ball bearing
The ball bearing design with a thickness-reduced corner and tapered surfaces addresses the wear issue in high-speed rotation by minimizing contact and deformation, enhancing durability and service life.
US20260185561A1Pending Publication Date: 2026-07-02MINEBEAMITSUMI INC
Patent Information
- Authority / Receiving Office
- US · United States
- Patent Type
- Applications(United States)
- Current Assignee / Owner
- MINEBEAMITSUMI INC
- Filing Date
- 2023-02-06
- Publication Date
- 2026-07-02
Smart Images
Figure US20260185561A1-D00000_ABST
Abstract
A ball bearing includes an inner ring including a raceway groove, an outer ring including a raceway groove, a plurality of balls disposed between the raceway grooves, and a retainer having a crown shape to be inserted between the balls. The retainer includes a base portion having an annular shape, a pair of pillar portions extending from the base portion in an axial direction, and a plurality of pockets formed along a circumferential direction. The balls are fitted between the pillar portions. The retainer comes into contact with the inner ring, and a tapered surface having an inner diameter gradually increasing toward the axial direction is provided at a corner portion at an inner peripheral surface side of the base portion.
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